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From: Ken Brown <kbrown AT cornell DOT edu>
To: "cygwin AT cygwin DOT com" <cygwin AT cygwin DOT com>
Subject: Re: TeX Live 2019 / TikZ
Date: Mon, 9 Sep 2019 01:55:17 +0000
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On 9/8/2019 9:19 AM, Ken Brown wrote:
> On 9/8/2019 5:03 AM, Achim Gratz wrote:
>>
>> I'm chasing a recent xfig test failure (i.e. that test was OK about a
>> year ago) that boils down to this TeX invocation:
>>
>> --8<---------------cut here---------------start------------->8---
>> $ tex
>> This is TeX, Version 3.14159265 (TeX Live 2019/Cygwin) (preloaded format=tex)
>> **\input tikz
>> (/usr/share/texmf-dist/tex/plain/pgf/frontendlayer/tikz.tex
>> (/usr/share/texmf-dist/tex/plain/pgf/basiclayer/pgf.tex
>> (/usr/share/texmf-dist/tex/plain/pgf/utilities/pgfrcs.tex
>> (/usr/share/texmf-dist/tex/generic/pgf/utilities/pgfutil-common.tex
>> (/usr/share/texmf-dist/tex/generic/pgf/utilities/pgfutil-common-lists.tex))
>> (/usr/share/texmf-dist/tex/generic/pgf/utilities/pgfutil-plain.def
>> (/usr/share/texmf-dist/tex/generic/oberdiek/atbegshi.sty
>> (/usr/share/texmf-dist/tex/generic/oberdiek/infwarerr.sty)
>> (/usr/share/texmf-dist/tex/generic/oberdiek/ltxcmds.sty)
>> (/usr/share/texmf-dist/tex/generic/oberdiek/ifpdf.sty)))
>> (/usr/share/texmf-dist/tex/generic/pgf/utilities/pgfrcs.code.tex
>> (/usr/share/texmf-dist/tex/generic/pgf/pgf.revision.tex)))
>> (/usr/share/texmf-dist/tex/plain/pgf/basiclayer/pgfcore.tex
>> (/usr/share/texmf-dist/tex/plain/pgf/systemlayer/pgfsys.tex
>> (/usr/share/texmf-dist/tex/plain/pgf/utilities/pgfrcs.tex)
>> (/usr/share/texmf-dist/tex/generic/pgf/systemlayer/pgfsys.code.tex
>> (/usr/share/texmf-dist/tex/generic/pgf/utilities/pgfkeys.code.tex
>> (/usr/share/texmf-dist/tex/generic/pgf/utilities/pgfkeysfiltered.code.tex))
>> ! Undefined control sequence.
>> \pgfkeyssetevalue ...gfkeys AT temptoks =\scantokens
[...]
> I'm traveling at the moment, but I'll be able to look at this in about a week.

I had a chance to take a quick look, and this is a known problem:

 
https://tex.stackexchange.com/questions/473365/why-is-pgf-3-1-not-compatible-with-tex

I suspect there's been a new release of PGF that fixes this.  I'll check on it 
and release an appropriate update when I return home.

Ken

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